Mold for water-closet-bowl rims



March '16 1926. 1,577,132

7 A. V. LAWTON Filed June 27, 1925 4 Sheets-Sheet 2 3 March 16 1926.

A. V. LAWTON Q 4 Sheets-Sheet 5 A. V. LAWTON March 16,1926.

fl yirzd U. Iawww,

Patented Mar. 16, 1926. I i

UNITED STATES PATENT OFFICE.

ALFRED v. LAW'ION, 0 DECATUR, ILLINOIS, ASSIGNOR T0 ADOLPI-I MUELLER,

. TRUSTEE, or DECATUR, ILLINOIS.

moLnEo WA'rER-cLosET-BowL RIMS.

Application filed June 27,1925," Serial No. 39,978.

T 0 all whom it may concern.-

Be it known that I, ALFR D V. LAWTON, a citizen of the United States,residing at Decatur, in the county of Macon and State of Illinois, haveinvented new and useful Improvements in Molds for Water-Closet- BowlRims, of which the following is a specification.

The present invention relates to iinprovements in molds, particularlyadapted for casting from suitable ceramic material tops or rims forwater closet bowls.

More particularly the object of the inven-. tion is to provide a moldfor such articles by which a top or rim provided with an annular waterchannel or conduit" and a relatively large number of perforations ordischarge outlets may be cast by a single operation. I 7

With a rmold constructed. as hereinafter described, it is possible tocast in one piece a closet bowl rim which, when positioned on the bodyof a bowl, having a fiat, ungrooved, upper edge will provide the desiredwater channel and outlet discharge perforations without subsequenttreatment.

In the accompanying drawings'there is illustrated one embodiment of theinvention which has been practically found'to operate successfully, butthere can, of'course, be modification in some of the-details shown andcertain of the parts are illustrated more or less conventionally. beconsidered as illustrative rather than restrictive of the invention,except as details are recited in the appended claims, and, of course,the proportions and exact forms of parts of the mold hereinafterdescribed may be varied without departing from the invcntion. 7 g

In the accompanying drawings:

Figure 1 is a perspective'view of a mold constructed in accordance withthe present invention, the parts being arrangedin the position occupiedwhen a rim or'top is to be poured; i

Figure 2 is a vertical section substantially on the line 22 of Figure'3. Figure 3 is an elevation of the botom mold section of Figures 1 and2. g

Figure 4. is a sectional view, substantially at right anglesto Figure 2,on the line fir-4: of Figure 1.

Figure 5 is a perspective viewof the intermediate and bottom sectionsarrangedas in The drawing is to Figures 1 to 4, the top section beingremoved. 7

Figure 6 is a similar view with two mem-' bers of the intermediatesection removed.

Figure 7 is a perspective detail view of one member of the intermediatemold section.

Figure 8 is a perspective view of the as scmbled mold reversed from theposition shown in Figures lto 6, and in the relation in which it ispositioned when it is to be detached from the article cast or formedtherein. I d V a Figure 9 is a view similar to Figure 8 with theuppermost section removed.

Figure 10 is. a similar view with two of the members of the intermediatesection withdrawn.

Figure 11 is a detail perspective of the lower member of the "mold,referring to Figures 8 to 10 inclusive. 1

Figure 12 is a more or less conventional view of a mold for the body ofa closet bowl showing the manner in which the run mold of the'presentinvention is related thereto when positioning the top or rinr on suchbowl.

Referring to the drawings, iii-which like reference characters designatecorresponding] parts in the several views, it will be seen that theembodiment of the invention illustrated comprises three sections,namely, two outer sect ons A, B, andan intermediate section which iscomposed of four separable members C, D, E and F. The inner faces of theouter sections A, B, are pro vided with tubular bosses A, B, which, whenthe several sections are assembled, contact with'each other, as shown in2 and 4, and provide an annular space within which are positioned themembers C, D, E and F' of the intermediate moldsection;

A groove or channel is formed in the inn r face 'of'the section A, aboutthe outer end of the boss A. and with this channel. comthe sliporceramieniixture may be poured.

-A suitable vent A also formed in the sectron A and communicates withsaid channel.

In the inner face; of the section A are formed a series ofperipheralnotches or seats a, a, a a and a which receive lugs 'municates anopening 53, through which The intermediate section is shown ascomprising four quadrant shaped sections the vertical edges of whichabut when said members are positioned about the bosses A, B. Saidmembers have a wedge-like tit when pushed inward and provide acontinuous wall about said bosses. If desired, the number of saidmembers of the intermediate section may be increased but the partimilararrangen'ieut shown has been found Very satisfactory.

Each of the aroshaped members (1, I), E and l" of the intermediatesection is so shaped that a portion :uljacent the inner end thereof willoverhang and extend substantially parallel with a portion of the surfaceof the boss B on the outer mold section B, audeach of said members l), Eand F, is provided at its inner end with a series of substantiallyvertically extending notches t which, when the sections are as semblcd,engage with the divisions between a series of notches b formed about-thePC riphery of said boss B. The notches f are of greater depth than thenotches 7) so that when the sections are assembled there will beprovided a series of spaced members, the inter 'als between whichcommunicate with the channel formed between the sections A, B, intowhich the members G, 1), E and F extend. The exposed portions of thenotches f are adapted to produce a peripherally notched skirt integralwith the rim or top adapted to cooperate with the inner face of thecloset bowl wall to provide the desired discharge passages from theannular water space or channel in the rim.

The boss B of the section B is provided at an intermediate point in itslength with a deflected section B and the member E of the intermediatemoldsection is provided with a corresponding deflected section E, which,with said portion B of the member B, provides a recess H constituting alateral extension of the mold chamber, in which will be formed thetongue or extension of the rim skirt I, which is commonly providedopposite the inlet to the water channel or space in the completed rim.

The members C, D, E and F of the intermediate section a re shown asprovided with sockets T1 adapted to receive pins or projections M on theouter section B so that accidental separation of the members C, D, E

and F from the section B or relative lateral noted, while preventingturning movement of the members of the intermediate. section about thebosses B, A", on the outer sections permit separation of theinternnaliate and outer sections by a direct, radially outward pull onany of the members of the interme diate section. A single lug or rib andcooperating notch or recess are sutlicient for retaining each of themembers C, l) and F in proper relation to the section A, but the memberE is preferably provided with two similar lugs c, c, and correspondingrecesses (.1 0 are provided thercjlor in the sect ion A.

The manner ()ill using the improved mold may be brielly described asfollows. The several sections are initially positioned as shown in :ligurcs l to 4.- inclusivo, and the required amount of slip poured intothe opening A. ll1c.:l'orm oi? the mold space or cavity provided by theseveral sections is such that a rim having an annular llat bottom faceand an integral depending shirt at the inner edge of such base isproduced. the skirt being curved to extend outward beneath said flatbottom face and having its free edge provided with a series of notches.

After the plastic content of the mold has hardened sutliciently, themold is reversed or positioned, as shown in Figure 8. The sectiml B isnow removed by being lifted directly from the intermediate section, thepin and socket connection L, M, between such sections ottering noobstruction to such movement. The members of the intcrmcdiate sectionare then successively withdrawn laterally, the connection between suchmembers and the other outer section A, namely, the notches a, a, a a,a", and the coacting lugs or ribs not interfering with such morement.

hen the outer section B and intermediate section have thus been removed,the rim into contact with the correspomling tlat up per edge of thecloset bowl. It is custon'iary to coat the contacting edge surfact-isoil. the rim and bowl with a suitable cement before super-posing the rimon the bowl, and thereafter the union between the members is completedin the ordinary manner.

To assist the operative in accurately positioning the rim on the bowl inthe mold N, 1

the mold section A is preferably provided with a plurality of sockets O,which receive suitable pins on the bowl mold N, so that the parts willbe accurately guided into the exact and proper relation.

As shown in Figure 12, when the rim or top is positioned on the bowl inthe mold N, the flat surfaces of the rim and bowl are in close contactand the water channel or space is provided entirely between thetransversely lit) curved skirt and bowl wall. The lower slightly outwardturned, free edge of the rim skirt, which as shown and described, isnotched need not be connected to the adjacent surface of the bowl butmay contact therewith. Y

An important feature of the invention is that by using the improved moldit is possible to cast a water closet bowl rimin which all of the waterchannel or space in the rim or the completed closet may be formed at asingle operation. Heretofore it has been customary to form a portion ofsuch water channel in the upper edge of the closet bowl or to make therim or top of a plurality of sections.

Having thus described the invention, what is claimed is 1. A mold forcasting water closet bowl rims, comprising superposed outer andintermediate sections, the intermediate section contacting withone ofthe outer sections including a plurality of members and being engagedwith said outer section by means permitting separation of said sectionsby lateral movement of the members of the intermediate section, theother outer section being engaged with the contacting intermediatesection by means permitting relative movement between said sections in avertical direction only.

2. A mold for casting water closet bowl rims comprising three superposedsections,

the intermediate section being formed of a plurality of members that areinterlocked with one outer section by means permitting disengagement ofsaid sections by lateral, horizontal, movement of thefmembers of theintermediate section and interlocked with the other outer section bymeans permitting relative movement between said sections in a verticaldirection only.

,3. A mold for casting water closet bowl rims comprising superposedouter and intermediate sections, the intermediate section contactingwith one of the outer sections being formed of a plurality of membersthat are connected with said outer section by interlocking tongues andrecesses permitting disengagement of said sections by lateral,horizontal, movement of the members of the intermediate section, theother outer section being engaged with the contacting intermediatesection by means permitting rela 'tive movement between said sections ina vertical direction only. p r

Ainold for casting water closet bowl rims comprising superposed outerand intermediate annular sect-ions, the intermediate section contactingwith one of the outer'sections being formed of a plurality of memherethat are connected with said outer section by arc-shaped interlockingtongues and recesses preventing relative rotary movement between saidsections and permitting separation of the sections by radial movement ofthe members of the intermediate section, the other outer section beingengaged with the contacting intermediate section means permittingrelative movement between said sections in a vertical direction only.

5. A mold for casting water closet bowl rims comprising superposedsections, one section having on its inner face a boss, provided with anotched periphery, and a recess that extends radially outward from saidboss, the notched periphery of the boss being deflected into saidrecess, a second section, contacting with that aforesaid, including aplurality of members forming a space receiving the boss on the firstsaid section and each having an undercut edge that overhangs a portionof said boss and is provided adjacent its face that contacts with thefirst said section with notches that register with the notches in saidboss when the parts are assembled, and a third section having on oneface a boss adapted to extendinto the space surrounded by the members ofthe second saidsection and to contact with the boss on the first saidsection.

6. A mold for casting water closet bowl rims comprising superposedsections, one section having on its inner face a boss, pro vided with anotched periphery, and-a recess that extends radially outward from saidboss, the notched periphery of the boss being deflected into saidrecess, a second annular section surrounding said boss and including aplurality of members each having an undercut edge that overhangs aportion of said boss and is provided adjacent its face that contactswith the first said section with notches that register with the notchesin said boss when the parts are assembled, the membersof said annularsection being engaged with the first said section by means permittingrelative movement between said sections in a vertical direction only,and a third section having on one face a boss adapted to extend into thespace surrounded by the members of the second said section and tocontact with the boss on the first said section, said third and secondsections being connected by means permitting disllli') engagement bylateral movement of the I members of the said second section.

In testimony whereof I have hereunto set my hand.

ALFRED v. LAWTON.

